CCTV cables generally have a Bare Copper Center Conductor, CCTV cables also have a high percentage (95%) bare copper braid.
CATV cables can have either a Copper Covered Steel, or Bare Center Conductor. CATV cables have an aluminium foil (100%) + a 45%- 65% Aluminum Braid.
Broadcast -SDI Coaxial Cables have a Bare Copper Center Conductor, SDI cables have a 100% aluminum foil (100%) + a high percentage (95%) Tinned Copper Braid.